package com.dy.design_pattern_study.observer_mode.dome3.observer_code;

import com.dy.design_pattern_study.observer_mode.dome3.notifier_code.Subject;

/**
 * @CreateBy zhangdingyi
 * @Date 2023-04-03
 * @Content 抽象观察者
 */
public abstract class Observer {
    public abstract void Update();
}
